<template>
  <!-- 整体 -->
  <div class="login_container">
    <!-- 登录 -->
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt />
      </div>
      <!-- 输入框区域 -->
      <el-form
        :model="loginFrom"
        :rules="loginFromRules"
        ref="loginFormRef"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginFrom.username" prefix-icon="iconfont icon-user_login"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            type="password"
            v-model="loginFrom.password"
            prefix-icon="iconfont icon-lock_fill"
          ></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button @click="resetLoginFrom" type="info">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      loginFrom: {
        username: "admin",
        password: "123456"
      },
      loginFromRules: {
        username: [
          { required: true, message: "请输入登录名称", trigger: "blur" },
          { min: 3, max: 5, message: "长度在 3 到 5 个字符", trigger: "blur" }
        ],
        password: [
          { required: true, message: "请输入登陆密码", trigger: "blur" },
          { min: 6, max: 16, message: "长度在 6 到 16 个字符", trigger: "blur" }
        ]
      }
    };
  },
  methods: {
    resetLoginFrom() {
      this.$refs.loginFormRef.resetFields();
    },
    login() {
      // console.log(111);
      this.$refs.loginFormRef.validate(async valida => {
        // console.log(valida);
        if (!valida) return;
        // 如果预校验成功返回true之后 发送axios请求 post返回一个promise对象 想拿到里面的值可以用async和await
        const { data } = await this.$http.post("login", this.loginFrom);
        if (data.meta.status != 200) this.$message.error("登陆失败");
        if (data.meta.status == 200) this.$message.success("登陆成功");
        // 将token产生的数据存放在session里面 因为这里面的数据当你关掉页面 就会删除
        // 第一个参数是属性名 第二个参数是属性值
        window.sessionStorage.setItem("token", data.data.token);
        // 链式编程
        this.$router.push("/home");
      });
    }
  }
};
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  background-color: #fff;
  width: 450px;
  height: 300px;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  .avatar_box {
    width: 130px;
    height: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 20px;
  box-sizing: border-box;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
